:root {
  color-scheme: light;
  --paper: #fff;
  --ink: #20252c;
  --muted: #555f6b;
  --link: #1556a0;
  --line: #d7dde5;
  --panel: #f3f6fa;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.85;
  overflow-wrap: anywhere;
}

a { color: var(--link); text-underline-offset: .2em; }
a:hover { color: var(--link); text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--link); outline-offset: 4px; }

#header {
  position: static;
  min-height: auto;
  padding: 0;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}

#header .container {
  max-width: 76rem;
  padding: 1.2rem 1.25rem;
}

#header .navbar { min-height: auto; }
#header .logo a { color: var(--ink); font-size: 1rem; font-weight: 750; text-decoration: none; }
#header .dropmenu ul li a { color: var(--muted); font-size: .9rem; }
#header .dropmenu ul li a.active,
#header .dropmenu ul li a:focus,
#header .dropmenu ul li a:hover { color: var(--link) !important; }

#start { padding-top: 0; }
#body-wrapper { padding: 0; }
#body-wrapper > .container,
#body-wrapper.blog-listing > .container {
  max-width: 72rem;
  margin: 2.5rem auto 5rem;
  padding: 0 1.25rem;
}

#body-wrapper .columns { margin: 0 -1.5rem; }
#body-wrapper .column { padding: 0 1.5rem; }
#item.col-9 { width: 68%; }
#sidebar.col-3 { width: 32%; }

.content-item { min-width: 0; }
.content-title { text-align: left !important; }
.content-title h2,
.content-title h2 a {
  color: var(--ink);
  font-size: clamp(1.8rem, 4.4vw, 2.65rem);
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -.025em;
  text-decoration: none;
}
.content-title h3 { color: var(--muted); font-size: 1.12rem; font-weight: 400; }
.content-title time,
.content-title .blog-date,
.content-title .tags { color: var(--muted); font-size: .88rem; }

h1, h2, h3, h4, h5, h6 { color: var(--ink); line-height: 1.45; }
h1 { margin: .6rem 0 1rem; font-size: clamp(1.8rem, 4.4vw, 2.65rem); letter-spacing: -.025em; }
.e-content h2,
#body-wrapper > .container > h2 {
  margin: 3rem 0 1rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--line);
  font-size: 1.5rem;
}
.e-content h3,
#body-wrapper > .container > h3 { margin: 2rem 0 .6rem; font-size: 1.2rem; }
p, ul, ol, dl, figure { margin: 1.2rem 0; }
li + li { margin-top: .45rem; }

blockquote,
.notices {
  margin: 1.5rem 0;
  padding: .7rem 1.2rem;
  background: var(--panel);
  border: 0;
  border-left: 4px solid var(--link);
  border-radius: 0 .4rem .4rem 0;
  color: var(--ink);
}

pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 1rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: .4rem;
  line-height: 1.6;
  white-space: pre;
}
code { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .9em; }
:not(pre) > code { padding: .1em .3em; background: var(--panel); }

.table-wrapper { max-width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .92rem; font-variant-numeric: tabular-nums; }
th, td { padding: .7rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
thead { background: var(--panel); }
img, svg, video { max-width: 100%; height: auto; }

#sidebar { padding-top: 0; }
#sidebar .sidebar-content {
  margin: 0 0 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: .5rem;
  background: var(--paper);
}
#sidebar h4 { margin: 0 0 .6rem; color: var(--ink); font-size: 1rem; }
#sidebar ul { margin: .6rem 0; padding-left: 1.3rem; }
#sidebar a { font-size: .92rem; }

.blog-listing .bricklayer { margin-left: 0; margin-right: 0; }
.blog-listing .bricklayer-column { padding: 0 .65rem; }
.blog-listing .card {
  margin-bottom: 1.3rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: .5rem;
  box-shadow: none;
}
.blog-listing .card-header,
.blog-listing .card-body,
.blog-listing .card-footer { padding-left: 1.2rem; padding-right: 1.2rem; }
.blog-listing .card-title h5 { margin: .3rem 0; font-size: 1.2rem; }
.blog-listing .card-title a { color: var(--ink); text-decoration: none; }
.blog-listing .card-subtitle,
.blog-listing .card-footer { color: var(--muted); font-size: .88rem; }

.btn, .button, button, input[type="submit"] {
  border-color: var(--link);
  border-radius: .35rem;
  color: var(--link);
}
.btn:hover, .button:hover, button:hover, input[type="submit"]:hover {
  background: var(--link);
  border-color: var(--link);
  color: var(--paper);
}

#footer {
  padding: 0;
  background: var(--paper) !important;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .88rem;
}
#footer .container { max-width: 76rem; padding: 1.2rem 1.25rem; }
#footer p { margin: 0; }

[id] { scroll-margin-top: 1.5rem; }

@media (min-width: 64rem) {
  #sidebar { position: sticky; top: 1.5rem; align-self: flex-start; max-height: calc(100vh - 3rem); overflow: auto; }
}

@media (max-width: 840px) {
  #body-wrapper > .container,
  #body-wrapper.blog-listing > .container { margin-top: 1.5rem; }
  #body-wrapper .columns { display: flex; flex-direction: column; margin: 0; }
  #body-wrapper .column { width: 100% !important; padding: 0; }
  #item { order: 2; }
  #sidebar { order: 1; margin-bottom: 1.5rem; }
  .mobile-menu .button_container span { background: var(--ink); }
}

@media (max-width: 30rem) {
  body { font-size: 1rem; }
  #header .container,
  #body-wrapper > .container,
  #body-wrapper.blog-listing > .container,
  #footer .container { padding-left: 1rem; padding-right: 1rem; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #171b21;
    --ink: #e7edf5;
    --muted: #b2bdcb;
    --link: #8dbdff;
    --line: #455264;
    --panel: #222a35;
  }
  input, textarea, select { background: var(--panel); color: var(--ink); }
}

@media print {
  #header .desktop-menu, .mobile-menu, #sidebar, .prev-next { display: none !important; }
  #body-wrapper > .container, #body-wrapper.blog-listing > .container { max-width: none; margin: 0; padding: 0; }
  #body-wrapper .column { width: 100% !important; padding: 0; }
  body { background: #fff; color: #000; font-size: 11pt; }
  pre { white-space: pre-wrap; }
  h2, h3 { break-after: avoid; }
}